/*  index  */

.index {
    width: 100%;
    height: auto;
}

/*  index_background */

.background_content {
    width: 100%;
    height: auto;


}

.index_background1 {
    position: fixed;
    top: 0;
    left: 0;
    z-index: -1;
    width: 100%;
    height: 100%;
    background: url("../../assets/images/background1.jpeg") 0 0 no-repeat;
    background-size: 100% auto;
}

.index_background2 {
    position: fixed;
    top: 0;
    left: 0;
    z-index: -2;
    width: 100%;
    height: 100%;
    background: url("../../assets/images/background2.jpeg") 0 0  no-repeat;
    background-size: 100% auto;
}

.index_background3 {
    position: fixed;
    top: 0;
    left: 0;
    z-index: -3;
    width: 100%;
    height: 100%;
    background: url("../../assets/images/background3.jpeg") 0 0  no-repeat;
    background-size: 100% auto;
}


/*  index-head*/

.index_head {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 999999;
    width: 100%;
    background-color: rgba(177, 241, 226,0.4);

}


.head_log {
    width: 40%;
}

.index_head {
    height: 75px;
}

.head_list_content {
    width: 100%;
    height: 100%;
    background: url("../../assets/images/log.png") left center no-repeat;
    background-size: auto 75px;
}

.head_list {
    width: max-content;
    margin: 0 auto;
}

.index_head_but {
    /*float: left;*/
    display: inline-block;
    width: 75px;
    height: 100%;
    line-height: 75px;
    text-align: center;
    cursor: pointer;
}

.index_head_but_span {

}

.index_head_but:hover {
    background-color: #01b7ee;

}


/*content*/


.content_box {
    width: 100%;
}

.content_box_child {
    width: 100%;
}

.content_show {
    background-color: rgba(255, 255, 255, 1);
    height: 500px;
}

.content_hidden {
    background-color: rgba(255, 255, 255, 0);
    height: 773px;
}


